| Office: | Member of the Malagasy Parliament |
| Constituency: | Toliara I |
| Term Start: | 27 May 2019 |
| Birth Date: | 27 July 1972[1] |
| Birth Place: | Toliara, Malagasy Republic |
| Party: | PSD (since 2023) |
Siteny Thierry Randrianasoloniaiko (born 27 July 1972) is a Malagasy judo executive, businessman, and politician.
He has served as the president of the Malagasy Judo Federation since 2010, chairman of the African Judo Union since 2015, and a vice-president of the International Judo Federation ex-officio as a holder of the prior position,[2] as well as President of the Malagasy Olympic Committee since 2011.[3]
Since 2007, he is the CEO of Siteny Immobilier, Siteny Distribution and TV Plus of Toliara, and is the CEO of Siteny Company Distribution for Airtel Madagascar since 2013.
Randrianasoloniaiko is a member of the Parliament of Madagascar since 2019, when he was elected as a member of the Together with President Andry Rajoelina (Malagasy: Isika Rehetra Miaraka amin’i Andry Rajoelina, IRD) coalition. He also ran as a candidate in the 2023 Malagasy presidential election as a member of the opposition, later dropping out alongside a wider opposition boycott,[4] although he still received over 14% of the votes,[5] finishing in second place. He appealed to the Supreme Court in order to annul the election results, claiming electoral fraud.